tools/perf/util/probe-finder.h

   1 #ifndef _PROBE_FINDER_H
   2 #define _PROBE_FINDER_H
   3
   4 #include "util.h"
   5
   6 #define MAX_PATH_LEN             256
   7 #define MAX_PROBE_BUFFER        1024
   8 #define MAX_PROBES               128
   9
  10 static inline int is_c_varname(const char *name)
  11 {
  12         /* TODO */
  13         return isalpha(name[0]) || name[0] == '_';
  14 }
  15
  16 struct probe_point {
  17         char                    *event;                 /* Event name */
  18         char                    *group;                 /* Event group */
  19
  20         /* Inputs */
  21         char                    *file;                  /* File name */
  22         int                     line;                   /* Line number */
  23
  24         char                    *function;              /* Function name */
  25         int                     offset;                 /* Offset bytes */
  26
  27         int                     nr_args;                /* Number of arguments */
  28         char                    **args;                 /* Arguments */
  29
  30         int                     retprobe;               /* Return probe */
  31
  32         /* Output */
  33         int                     found;                  /* Number of found probe points */
  34         char                    *probes[MAX_PROBES];    /* Output buffers (will be allocated)*/
  35 };
  36
  37 /* Line number container */
  38 struct line_node {
  39         struct list_head        list;
  40         unsigned int            line;
  41 };
  42
  43 /* Line range */
  44 struct line_range {
  45         char                    *file;                  /* File name */
  46         char                    *function;              /* Function name */
  47         unsigned int            start;                  /* Start line number */
  48         unsigned int            end;                    /* End line number */
  49         unsigned int            offset;                 /* Start line offset */
  50         char                    *path;                  /* Real path name */
  51         struct list_head        line_list;              /* Visible lines */
  52 };
  53
  54 #ifndef NO_LIBDWARF
  55 extern int find_probepoint(int fd, struct probe_point *pp);
  56 extern int find_line_range(int fd, struct line_range *lr);
  57
  58 /* Workaround for undefined _MIPS_SZLONG bug in libdwarf.h: */
  59 #ifndef _MIPS_SZLONG
  60 # define _MIPS_SZLONG           0
  61 #endif
  62
  63 #include <dwarf.h>
  64 #include <libdwarf.h>
  65
  66 struct probe_finder {
  67         struct probe_point      *pp;                    /* Target probe point */
  68
  69         /* For function searching */
  70         Dwarf_Addr              addr;                   /* Address */
  71         Dwarf_Unsigned          fno;                    /* File number */
  72         Dwarf_Unsigned          lno;                    /* Line number */
  73         Dwarf_Off               inl_offs;               /* Inline offset */
  74         Dwarf_Die               cu_die;                 /* Current CU */
  75
  76         /* For variable searching */
  77         Dwarf_Addr              cu_base;                /* Current CU base address */
  78         Dwarf_Locdesc           fbloc;                  /* Location of Current Frame Base */
  79         const char              *var;                   /* Current variable name */
  80         char                    *buf;                   /* Current output buffer */
  81         int                     len;                    /* Length of output buffer */
  82 };
  83
  84 struct line_finder {
  85         struct line_range       *lr;                    /* Target line range */
  86
  87         Dwarf_Unsigned          fno;                    /* File number */
  88         Dwarf_Unsigned          lno_s;                  /* Start line number */
  89         Dwarf_Unsigned          lno_e;                  /* End line number */
  90         Dwarf_Addr              addr_s;                 /* Start address */
  91         Dwarf_Addr              addr_e;                 /* End address */
  92         Dwarf_Die               cu_die;                 /* Current CU */
  93         int                     found;
  94 };
  95
  96 #endif /* NO_LIBDWARF */
  97
  98 #endif /*_PROBE_FINDER_H */